1. The pressure gauge must be placed vertically during prevention and control: it should be tightened with a wrench during installation, and the outer shell should not be directly screwed by hand, as this will damage the shell. Do not let it collide during transportation to avoid damage.

2. When using a pressure gauge, pay attention to keeping its amplitude below one millimeter.

3. In the process of use, if the pointer of the instrument cannot return to zero due to the high temperature in the environment, the rubber plug on the case can be cut open to allow the atmosphere to enter the interior of the instrument, which can easily solve this problem.

4. When using the instrument, pay attention to the external temperature and control it within -25 to 55 degrees Celsius. Only within this temperature range can the pressure gauge work properly and not be damaged.

5. Pressure gauges should be checked regularly during use, with a minimum inspection cycle of every three months. If any faults are found during the inspection, they should be repaired promptly.

6. The use of pressure gauges also has a certain range, which should be controlled within the range of one-third to two-thirds of the maximum value of the pressure gauge.